From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Speedometer check, various temperature readings, and petrol consumption during high-speed runs.
| Identifier | ExFiles\Box 125\3\ scan0097 | |
| Date | 14th March 1939 | |
| Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies}10/Jd.{J. Draper - Frames}14.3.39. -4- Speedometer check Cont'd.{John DeLooze - Company Secretary} clock actual error. 80 73.8 6.2 m.p.h. Maximum crankcase oil temperature reached was 132°C. There was every indication that this would rise still further if high lap speeds were continued, it therefore should not be taken as a maintained figure. Maximum under bonnet temperature 42.5°C. Outside air temp. 11°C. Petrol consumption taken over 3 high speed runs 13.5 average speed 47 m.p.h. Rm{William Robotham - Chief Engineer}/F.Dodd. | ||